Search Publications
Multi-wavelength study of MGRO J2019+37
Yuan, Qiang; Hou, Chao; Chen, Song-Zhan +3 more
MGRO J2019+37, within the Cygnus region, is a bright extended source revealed by Milagro at 12-35 TeV. This source is almost as bright as the Crab Nebula in the northern sky, but is not confirmed by ARGO-YBJ around the TeV scale. Up to now, no obvious counterpart at low energy wavelengths has been found. Hence, MGRO J2019+37 is a rather mysterious…
Amazonian thermokarst in Danielson crater, Arabia Terra region, Mars
Baioni, Davide; Murana, Alessio; Tramontana, Mario
This paper describe the possible ice-related landforms observed within Danielson crater which is centered at about 8°N and 353°E, in the region of southwestern Arabia Terra about 800 km south of Becquerel crater.
A morphological survey of the study area through an analysis of the available Mars images was performed. The features of the landfo…In-flight calibration of the Cluster PEACE sensors
Wilson, R. J.; Fazakerley, A. N.; Watson, G. +6 more
The Plasma Electron and Current Experiment (PEACE) instruments operate on all four of the Cluster spacecraft and measure the 3-D velocity distribution of electrons in the energy range from 0.59 eV to 26.4 keV during each spacecraft spin. Pitch angle distributions and moments of the velocity distribution are also produced. As the mission has progre…
The loss-limited electron energy in SN 1006: Effects of the shock velocity and of the diffusion process
Miceli, M.; Bocchino, F.; Decourchelle, A. +3 more
The spectral shape of the synchrotron X-ray emission from SN 1006 reveals the fundamental role played by radiative losses in shaping the high-energy tail of the electron spectrum. We analyze data from the XMM-Newton SN 1006 Large Program and confirm that in both nonthermal limbs the loss-limited model correctly describes the observed spectra. We s…
Radio Continuum Sources associated with the HH 92 and HH 34 Jets
Rodríguez, Luis F.; Reipurth, Bo; Chiang, Hsin-Fang
We present high angular resolution, high sensitivity 8.46 GHz (3.6 cm) radio continuum observations made toward the core of the HH 92 outflow with the Very Large Array in 2002-2003 and with the Expanded Very Large Array in 2011. We detect a group of three compact sources distributed in a region 2'' in extension and discuss their nature. We conclud…
Gaia Science Alerts and the Observing Facilities of the Serbian-Bulgarian Mini-Network Telescopes
Damljanovic, G.; Vince, O.; Boeva, S.
The astrometric European Space Agency (ESA) Gaia mission was launched in December 19, 2013. One of the tasks of the Gaia mission is production of an astrometric catalog of over one billion stars and more than 500000 extragalactic sources. The quasars (QSOs), as extragalactic sources and radio emitters, are active galactic nuclei objects (AGNs) who…
Reducing the tension between the BICEP2 and the Planck measurements: A complete exploration of the parameter space
Lu, You-Jun; Li, Yi-Chao; Wu, Feng-Quan +1 more
A large inflationary tensor-to-scalar ratio r0.002 =0.20-0.05+0.07 is reported by the BICEP2 team based on their B-mode polarization detection, which is outside of the 95% confidence level of the Planck best fit model. We explore several possible ways to reduce the tension between the two by considering a model in …
Giant magnetospheres in our solar system: Jupiter and Saturn compared
Krupp, Norbert
Dynamical Behavior of X-Ray Spectra from Markarian 766
Takahashi, M.; Liebmann, A. C.; Haba, Y. +3 more
Mrk 766, a bright narrow-line Seyfert 1, has been observed eight times by the XMM-Newton satellite. We carried out the analysis of the composite data from all of these observations together by applying a dynamical method. Through this analysis, we noted a longer timescale variability in addition to rapid short-time variability. This longer term va…
Demonstrating the power of heliospheric imaging for space weather: tracking solar ejecta from Sun to Earth
Davies, Jackie A.; Harrison, Richard A.